On a new campaign, choose Fill with AI. Give it either a product URL (link directly to a product page for the best result) or a PDF of an existing brief, optionally add the campaign type, objective and your vision in a sentence, then generate.

Heylist fills the brief and suggests product images you can pull in with one click. If generation fails, the error tells you why — site unreachable, nothing readable, no product found, not enough detail, ineligible category, PDF too large or not actually a brief.